@jojorender For years, I've been using the Grapes sample scene that you can find in the asset browser. It's not Corona, but does give you an idea of the raw render speed since it has many render intensive features in the scene, i.e. SSS, opacity, Dof, etc. Obviously, the faster C4D runs on your system, the faster Corona will render as well.
There is an old thread of mine that shows render times. Since everyone has access to that scene, it's easy and consistent. Plus, it's more of a real-word test than a benchmark test. Just open that scene and hit render to picture viewer without changing anything.
For reference, my old Mac Pro trashcan did it in 10 min 3 sec. My 2017 iMac Pro blew that away at 3:19. I also have a renderbox with dual-CPU E5 v4 processors. That thing comes in below 3 min, but I don't have that info handy.
